First you need to gain access to all 3 starting cities and their respective camps.

I started my character in Limsa Lominsa, ran to the docks and took the boat. Once I got there I followed the MAIN path that goes West to East doing my BEST to avoid the Antlings (they one shot you). And along the way I stopped at every camp, touch the crystal and moved on, after the first camp I went to the Desert city (forgot name), zoned in and touched the crystal there.

Zoned out, touched the camp crystal to the north east and went on my merry way towards Gridania staying on the MAIN west to east path touching all of the 'camp' crystals along the way, ending my journey in Gridania and touching the crystal there.

As a result, I can now instantly teleport to any city or camp, grab leves from all of the cities and do way more than 8 leve in 48 hours.

Rather it is intended or not, Since last night I have done 3 of the level ~1 carpentry leaves (1 in each city) and 3 of the level 5 leves in each city, in addition to 4 battlecraft leves and 2 field leves.